iPhone 8 has a screen with an aspect ratio of 16:9, a diagonal length of 5.5, and 1080 by 1920 physical pixels. compute the dimensions of the screen and the pixels per inch. pleasehelp I don't understand

∆abc is reflected across the x-axis and translated 2 units up to give the image ∆a'b'c' with coordinates a'(1, 1), b'(2, -1), c'(2, 1). what are the coordinates of the preimage ∆abc? a. a(-1, 1), b(-2, 3), c(-2, 1) b. a(1, 1), b(2, 3), c(2, 1) c. a(1, -3), b(2, -1), c(2, -3) d. a(1, -3), b(2, -5), c(2, -3)

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Write the following as a base and exponent